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AlladinOne [14]
2 years ago
11

A student at a local college just completed 11 credit hours. His grade report is presented below.

Mathematics
1 answer:
SSSSS [86.1K]2 years ago
6 0

Answer:

Option c (2.27) is the right option.

Step-by-step explanation:

As per the question, the values are:

<u>Credit hours                                       Grade                                 fiXi</u>

       (fi)                                                   (Xi)                              

<u>         4                                                  B = 3                                   12</u>

<u>         3                                                  C = 2                                   6</u>

<u>         1                                                   A = 4                                   4</u>

<u>         3                                                  D = 1                                    3       </u>

Now,

\Sigma fi= 25

\Sigma fiXi = 25

hence,

The average will be:

= \frac{\Sigma fiXi}{\Sigma fi}

On putting the values, we get

= \frac{25}{11}

= 2.27                              

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3 years ago
Select all possible values for x in the equation x^3=375?
Helga [31]
<h2>Hello!</h2>

The answers are:

The possible values for x in the equation, are:

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Second option,  \sqrt[3]{375}

<h2>Why?</h2>

To solve the problem, we need to remember the following properties of the exponents and roots:

a\sqrt[n]{b}=\sqrt[n]{a^{n}*b} \\\\\sqrt[n]{a^{m} }=a^{\frac{m}{n}}\\\\(a^{b})^{c}=a^{b*c}

Then, we are given the expression:

x^{3}=375

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Hence, the possible values for x in the equation, are:

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Second option,  \sqrt[3]{375}

Have a nice day!

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